My beauty-crazed little sisters go through a strict Oxy ritual twice a day, in an attempt to get rid of their zits. It's really funny to watch, they count the times they dab their faces with a pad, then meticulously apply the medication then looks at a stopwatch to make sure it stays for 30 minutes, the rinses it off gently. Amusingly, they still have just as many pimples as I do, and I do nothing but wash my face when I shower. It drives them mad.

It supposedly dries off excessive oil, unclogs pores and kills acnebacteria, but it hasn't been working for most people I know. And yet, it is still a wildly successful product (remember the Clerasil ads), making millions of acne-ridden teenagers shell out their pocketmoney to buy a product that probably won't work and cause all the fun side effects I described.